על חיי משה, ספר א מ״טOn the Life of Moses, Book I 49

א׳
1[269] But, as he proceeded there was given to him on the road an unmistakable sign that the purpose which he was so eager to serve was one of evil omen. For the beast on which he happened to be riding, while proceeding along the straight road,
ב׳
2[270] first came to a sudden stop, then, as though someone opposite was thrusting it by force or causing it to rear, it fell back  and then again swerved to right and left and floundered hither and thither unable to keep still, as though heady with wine or drink; and, while repeatedly beaten, it paid no regard to the blows, so that it almost threw its rider, and, even though he kept his seat, caused him as much pain as he gave.
ג׳
3[271] For the estates on either side had walls and hedges close by, so that when the beast in its movements dashed against these, the feet, knees and shins of its master were crushed and lacerated by the pressure.
ד׳
4[272] It was evidently a divine vision, whose haunting presence had for a considerable time been seen by the terrified animal, though invisible to the man, thus proving his insensibility. For the unreasoning animal showed a superior power of sight to him who claimed to see not only the world but the world’s Maker.
ה׳
5[273] When, cat last, he did discern the angel standing in his way, not because he was worthy of such a sight, but that he might perceive his own baseness and nothingness, he betook himself to prayers and supplications, begging pardon for an error committed in ignorance and not through voluntary intention.
ו׳
6[274] Yet even then, when he should have returned, he asked of the apparition whether he should retrace his steps homewards. But the angel perceived his dissimulation, for why should he ask about a matter so evident, which in itself provided its own demonstration and needed no confirmation by word, as though ears could be more truthful than eyes or speech than facts? And so in displeasure he answered: “Pursue your journey. Your hurrying will avail you nought. I shall prompt the needful words without your mind’s consent, and direct your organs of speech as justice and convenience require. I shall guide the reins of speech, and, though you understand it not, employ your tongue for each prophetic utterance.”